killer and jos



NAFETERS, PHOTO-LITHOGRAPHER WASHINGTON n c STA es rrirnnr Fries..

JONA. HILLER- AND JOS. BULLOOK, OF COHOES, NEW YORK, ASSIGNORS TO WILLIAM SMITH, O11 ALBANY, NEW YORK.

KNITTINGMACHINE Speci'catonof Letters Patent No. 22,769, dated VJanuary 25, 1859.

To all whom 'it may concern:

Be it known that we, JONATHAN HILLER and Josnrfri BUmLoon, of Oohoes, Albany county, State `of New York, have jointly invented certain improvements in that part of the `apparatus of rknitting-machiiles known as the stop-inotiom7 whereby on the failure of the stitch or any other irregularity in vthe operation of the machinethe integrity 4of the fabric is `broken or deranged the machine is stopped from working until the defect can be repaired?, and we declare the following specification, with ythe drawings hereto attached as part `of the same, to be a -full and perfect `description thereof;

Figure l represents `in `perspective a knitting machine with our invention applied to Ait; Figs. 2 Aand 3 diagramsiof the stop carl Iriage with its working apparatus. l

`Similar letters in the different figures denote 'the same parts of Vithe apparatus.

Our invention `is attached -to what `is known as Baileys circular knitting `nia-1 `areomitted as not `necessary to illustrate the stop-motion.

From the points of ythe needles depends the fabric Fias Afast-as it is knit; the integrity of the cloth depending upon each needle making a perfect stitch; `so that whenever a needle fails to do so, and a stitch is dropped, a gap `occurs in the work which unless repaired at once is repeated at the same point leaving a serious -defect in the article. the machine promptly, on the least irregularity in this respect is the obj ect of what is called a stop motion several of which have been made, all more or less defective in certainty and promptness of action, defects which we claim to have remedied by our invention.

A rectangular flat plate C is attached to the revolving circle B. The outer and inner edges of this plate, which we will call the stop carriage, are turned up into, or terminated by upright ledges D, D, through which by slots therein, two parallel flat sides G and H pass, and are free to move back- To obviate this difficulty and stop .lower part `being `terminated by a point f sharp enough to pass i-nto `any breach left by a dropped `stitch without cutting the fabric against which `it must pass steadily `as it proceeds around the circle of needles just below their hooks or points. The `necessary pressure is kept up by a light `(spiral) spring .a attached to :the `outer `edge yof ,the carriage at one end, and at the other to an upright .pin b upon `the slide. The slide iGr Ais kept `habitually pressed outward `by a similar device and arrangement of spring from the .end of the carriage to pin c upon the slide. The outer end of this slide is sloped `or beveled in a horizontal direction.

This same outer `end overlies the movable ring R which forms the outer edge o-f the machine but moves 'freely without attachment to the circle B. Q

Upon this ring at short intervals are ,fixed upright pins p, p, `so arranged that when the outer end of slide G is drawn outward -by its spring it will Elie between the pins, but when held inward will clear the pins. At any point of the ring ahorizontal 4pinJ is `inserted into its periphery. The ob "jectof this pin `is to move the ring and disengage the driving Vmachinery from the knitting apparatus, `as follows The belt pulley P runs `loose upon the shaft S, at one end of which is the `bevelwheel L which meshes into teeth on 'the underside of the rotary `circle B. At Vthe other end of the shaft is fixed a coupling box M a corresponding box N being attached to the pulley P. P is connected in the usual way by a forked arm O with the hand lever T by whose movement it can be coupled or uncoupled into M, the spring X holding the lever so as to keep them uncoupled.

A horizontal detent lever U is pivoted upon the stand WV with its inner limb projecting to near the ring R, and from it rises a pin e, the detent being kept pressed against T by the spring CZ so that when T is drawn back it will catch and hold it in the notch of the detent, thus coupling the machinery and putting in motion the circle B and the entire knitting apparatus.

At the beginning of operations the pin J is placed behind and against the pin ci at f by moving the ring R, so that any movement of the ring from left to right may shift the detent and uncouple the moving power. The ring is intended to move only upon the occurrence of a breach in the fabric, and by its connection with the operations of the stop carriage which is thus: The slide H (as shown) is kept drawn inward whenever the cloth is whole. The slide G is drawn inward and kept in that position by a dog or pawl g with its spring (see Figs. 2 and 3) pivoted upon the plate G, the pawl having two arms, the one holding into a notch It, and the other extending over slide H, upon which slide a movable gage e' is aXed by which the distance slide H shall move, before tripping g and disengaging slide G, can be adjusted so as to act upon a small or greater break of the fabric. So long as the slide G shall be held by the pawl its outer end will pass behind the pins ,but the moment that theroutward pressure of H, by the gage touching the pawl trips g and releases G, its outer end springs out between the pins, and by contact with one moves the ring R and disengages the driving power. In order to set the slides after each stoppage, conveniently there is an adjunct apparatus, consisting of a lever Y pivoted upon the inward projection of slide H. It is three-pronged 7c forming a handle Z and m stops. In Fig. 2 the apparatus is in a position to leave the slides free to move. By turning the handle 7c to the left Z will rest against the inner ledge of G, (as shown in Fig. 3,) while m holds slide G so that the pawl g shall enter its notch h. This being done and the circle R moved so that the pin J, (which after each stoppage will lie as shown in Fig. l) shall be at f: the lever Y is shifted to lie as in Fig. 2 and the machine put in motion. Should lever Y be left as in Fig. 3 the slide H would remain immovable and its point pass over the defective spots. To prevent such a result from the carelessness of attendants pins r. r. are attachcd to any convenient parts of the frame so as to intercept the handle 7c before the carriage shall have traveled far in its circuit, and so the contingency of a large breach occurring before the mischief is detected be avoided.

The advantages of this machine are these: The stop motions now in use depend upon the action of a slide the finger being at one end of it, and the other end intended to catch the pins on the circle. Now whenever a very small defect or depression occurs, the finger will not pass deeply enough under the needles to allow the slide to pass beyond a pin, whereas in our machine the slightest depression will move the linger slide H so as to disengage G, which then is thrown out to its full extent. Should the break occur when the slide is opposite a pin it will strike against it, and slide along cit, but by the time its edge passes the pin the finger will have reached rm cloth and hold the slide back, whereas whatever may be the movement of slide H after g is tripped the moment G passes a pin it will press out and strike the next pin of the ring and stop the machine.

le do not claim a slide operating by a bent arm at one end, to enter breaches in the fabric, and at the other by moving a ring which is attached to and operates it, shift a coupling apparatus.

7e claim- The apparatus attached to the stop carriage: viz: the Combination of the slides H and G, pawl g, gage z', and arm m oper ating together upon the breaking of the fabric to uncouple the driving power, by and in combination with the ring R, pin J, and spring (Z, which release the detent U, substantially in the manner and for the purposes set forth in the within specification.

JONATHAN HILLER. JOSEPH BULLOCK. Vitnesses A. V. DE lVI'r'r, RICH. VARns DE Wrr'r. 

